ZEISS Stemi 508, configured for microfluidics inspection.
Robust stereo microscope with apochromatic 8:1 zoom (6.3x to 50x), true 3D viewing, and integrated illumination. Ideal for routine checks of wafers, molds, masks, and microfluidic chips, from fast overview to detailed inspection. Available with a 50/50% or a 0/100% phototube. Camera not included.
General
Your stereo microscope for routine microfabrication and chip checks
Stemi 508 is a robust all-rounder for everyday lab work and industrial inspection. Darwin Microfluidics selected this configuration for microfluidics applications, where you want to observe chips, molds, masks, and wafers exactly as they are: rich in detail, sharp in focus, and free from distortion or color fringes.
The 8:1 zoom range helps you move quickly from an overview of a full chip to a detailed inspection of features and interfaces. The integrated K EDU stand is designed for daily use, and the included illuminators let you tune contrast to reveal surface defects.
Typical microfluidics uses
- Inspection of molds, wafers, and masks before and after microfabrication
- Routine chip checks for defects, debris, damage, and alignment issues
- Quick overview of most chips (large object field), then zoom in for local details
- Surface inspection and scratch detection using segmentable ring illumination
Key features
Fast overview, crisp detail, and lighting that helps defects stand out.
Apochromatic 8:1 zoom optics
Distortion-free image with excellent contrast and reduced color fringes, useful for inspection and documentation. Parfocal zoom keeps the sample in focus while zooming.
Ergonomic 35° viewing angle
Comfortable posture for repetitive daily checks, especially when working at the bench for long periods.
Lighting that reveals surface structure
Double spot provides oblique or grazing light to boost shadows and contrast. Segmentable ringlight supports full, half, quarter, or opposing segments to highlight edges and defects.
Phototube options: 50/50% or 0/100%
Choose the light split that matches how you work: fast inspection or best camera signal.
50/50%
View through the eyepieces while capturing with the camera. Ideal for quick positioning and focusing, demos, and routine checks.
0/100%
Send 100% of the light to the camera for maximum brightness, shorter exposures, and lower noise. Best for documentation, QC, and imaging at higher magnification.
Stable K EDU stand for daily workflows
Robust bench stand with integrated power and a comfortable working area for repeatable observation and handling.
Content
1x Body Stemi 508 trinocular (50/50% or 0/100%) with 10x/23 eyepieces (435064-9031-000 or 435064-9021-000)
2x Eyepiece eyecup (444801-0000-000)
1x Stand K EDU (435425-9000-000)
1x Double spot illumination K LED (435525-9020-000)
1x Segmentable ringlight K LED (435525-9050-000)
1x Camera adapter 60N C-Mount 2/3" 0.5x
Country-specific power plug
Quick Start Guide and User Manual
Specifications
Optical system
| Operation concept |
Stereo microscope, Greenough design with 8:1 zoom range |
| Magnification range |
6.3x to 50x with basic version (10x eyepieces). Using interchangeable optics, magnifications from 1.9x to 250x are accessible (on demand). |
| Zoom optics quality |
Distortion-free, excellent contrast, apochromatic corrected |
| Parfocality |
Object remains focused while zooming |
| Zoom click stops |
10 click stop positions can be activated by choice: 0.65x, 0.8x, 1x, 1.25x, 1.6x, 2x, 2.5x, 3.2x, 4x, 5x |
| Max. resolution |
225 lp/mm basic version, up to 450 lp/mm with interchangeable optics (not included) |
| Working distance |
92 mm basic version, up to 287 mm using interchangeable optics (not included) |
| Maximum object field |
36.8 mm basic version, up to 122.7 mm using interchangeable optics (not included) |
| Viewing angle |
35° |
| Eyepieces |
PL10x/23 Br. foc (included) |
Stand and illumination
| Stand |
Model K EDU, 200 x 310 mm base, 250 mm column with drive, travel 145 mm |
| Illuminators included in this configuration |
Double spot K LED (max. brightness typ. 90000 lx)
Segmentable ringlight K (max. brightness typ. 55000 lx) |
| LED specifications |
Typical 5600 K color temperature; typical lifetime 25000 h |
Documentation
Stemi 508 brochure
Quick start guide included in the bundle
Instruction manual included in the bundle
